Breaking: David Ian Long, 29, Named as Thousand Oaks Shooter

A shooting at a Southern California has left 12 dead and more injured. The gunman suspected of killing at least 12 people at a Southern California bar late Wednesday evening has been identified as David Ian Long, according to reports.

Mike Levine a reporter for ABC is reporting that Suspect Long went by his middle name "Ian," we are being told by neighbors. The earliest reports were incomplete and identified him only as "Ian Long." Law enforcement officers say Long was a military vet who served in the U.S. Marine Corps.

Armed with a 45 caliber hand gun and employing smoke devices the hooded gunman dressed all in black, reportedly a trench coat, opened fire during an event known as "college night" at Borderline Bar & Grill, a popular country bar in Thousand Oaks. The gunman was later found deceased.

Authorities have not yet determined a motive for the attack Wednesday night. More on that as details become available.

Patrons were in absolute panic and screamed "Get down!" Using barstools to smash second-floor windows many jumped to safety as gunfire erupted at the college hangout. The horrendous death toll included patrons inside the bar and a sheriff's sergeant who was the first officer to enter the bar, according to Ventura County Sheriff Geoff Dean said.